Oxford University Press.
Interactive exercises, useful downloads, games, and weblinks. Practise grammar, vocabulary, pronunciation, listening, and reading, and have some fun, too.
http://elt.oup.com/student/englishfile/;jsessionid=CE17EE8E66C0662D3C428C76DA700651?cc=us&selLanguage=en

Voice of America - Learning English

Articles, lessons, activites, and interactive learning.
http://www.voanews.com/learningenglish/theclassroom/home/

English Club

http://www.englishclub.com/grammar/index.htm

English Cliffs Notes

http://www.cliffsnotes.com/writing

Many Things

Interesting things for ESL students
http://www.manythings.org

Using English

Tools and resources for learning English.
http://www.usingenglish.com

Learn English Today

Lessons, vocabulary, idioms, proverbs and business English, plus exercises and word games.
http://www.learn-english-today.com/

Fact Monster - Grammar and Spelling

Become Word Wise.
http://www.factmonster.com/ipka/A0882902.html

Purdue's Online Writing Lab - English Language Learners

Resources for writing, plus links to exercises and more resources.
http://owl.english.purdue.edu/owl/section/5/

ESL Writing Materials from OWL

http://owl.english.purdue.edu/engagement/3/

TOEFL

Test Magic

Help preparing for the TOEFL exam.
http://www.testmagic.com/TOEFL/

Dictionaries

Your Dictionary

The dictionary you can understand
http://www.yourdictionary.com/

Wordnik

A new way to discover meaning.
http://www.wordnik.com/

Wordnet

Resembles a thesaurus, in that it groups words together based on their meanings, but different.
http://wordnetweb.princeton.edu/perl/webwn

Lingro

The cool dictionary.
http://lingro.com/

Pronunciation

Univ. of Iowa's English Phonetics lessons

http://www.uiowa.edu/~acadtech/phonetics/english/frameset.html

Eva Easton's Authentic American Pronunciation

http://evaeaston.com/

Activities

Activities 4 ESL

Quizzes, tests, exercises and puzzles for learning English
http://a4esl.org/

Grammar Bytes!

Lessons, handouts, interactive exercises.
http://www.chompchomp.com/handouts.htm

Listening

ESL Cyber Listening Lab

Listening exercises, conversations, and vocabulary for different situations using various media.
http://esl-lab.com/index.htm

Idioms

The Idiom Connection

Idoms by category and quizzes.
http://www.idiomconnection.com/

Idioms and Expressions English

Expressions, phrases, sayings, idioms and slang.
http://www.idiomsandexpressions.com/

Grammar

Guide to Grammar and Writing

All sorts of information about writing everything from sentences to research papers.
http://grammar.ccc.commnet.edu/grammar/

SAS Curriculum Pathways

Interactive resources for all subjects. Click on the dropdown menu for categories to go to the English lessons. Saddlebrook students, your login Username is sbp4me, and you use no password.
http://www.sascurriculumpathways.com/portal/#/

Punctuation Rules! Exercises on SAS CP

Punctuation Rules!, QL #1364

Grammar Book

Grammar, punctuation, capitalization, and spelling rules.
http://www.grammarbook.com/

HyperGrammar

An electronic grammar course from the University of Ottawa, Canada.
http://www.arts.uottawa.ca/writcent/hypergrammar/

Vocabulary

Vocabulary.com

Customized word game to challenge yourself.
http://www.vocabulary.com/

Cambridge University Vocabulary Trainer

Vocabulary units of study.
http://cdextras.cambridge.org/VocabTrainer/objectivefce/index.htm

Univ. of Nottingham's Academic Word List

Expand your academic vocabulary.
http://www.nottingham.ac.uk/~alzsh3/acvocab/index.htm

Writing

Purdue University’s Online Writing Lab

https://owl.english.purdue.edu/owl/

Online Writing Support

http://wwwnew.towson.edu/ows/index.htm

Language Arts for Dummies

http://www.dummies.com/how-to/education-languages/language-arts.html

Write.com Writing Resources

http://www.write.com/writing-resources/

More Resources

Professor Leonardo's Links

A multitude of categorized links to take you to many more interesting and valuable websites for learning English.
http://leonardolinks.blogspot.com/

ESL Gold

English study and learning materials.
http://www.eslgold.com/

Language Help

Table of Contents

Learning English

English-Zone

New English File